发明名称 |
CORROSION-RESISTING AND WEAR-RESISTING ALLOY AND DEVICE USING THE SAME |
摘要 |
To provide a corrosion-resisting and wear resisting alloy including cobalt, nickel or iron as a base used for a sliding part or a valve seat for a machine, and restraining erosion and corrosion caused by eutectic carbide constituting the alloy in an atmosphere with dissolved oxygen. A material is selected from a cobalt base added with Cr and/or W, a nickel base added with Fe and/or Cr, and an iron vase added with Cr and/or Ni. The material is cast into an ingot or a slab to produce an intermediate material. The intermediate material comprises mesh-like eutectic carbide and a base material surrounded by the eutectic carbide. A heat plastic forming is applied to the intermediate material at a temperature 650.degree.C or more and the solidus temperature or less. The eutectic carbide is formed into multiple grains or clusters as a discontinuous distribution. A resulting corrosion-resisting and wear-resisting alloy has 0.1 to 0.5 of coefficient of friction, and 300 to 600 Hv of Vickers hardness without age-hardening process. |
申请公布号 |
CA2356026(C) |
申请公布日期 |
2008.11.25 |
申请号 |
CA20012356026 |
申请日期 |
2001.08.27 |
申请人 |
HITACHI, LTD.;HITACHI KYOWA ENGINEERING CO., LTD. |
发明人 |
KUMAGAI, SHIN;CHIBA, YOSHITERU;OGAWA, YASUHIRO;SHINOHARA, HIROYUKI;SAKAMOTO, AKIRA;KIYOTOKI YOSHIHISA |
分类号 |
C22C38/58;B22D7/00;B22D25/06;C21D7/13;C21D8/00;C22C19/00;C22C19/05;C22C19/07;C22C38/00;C22C38/02;C22C38/14;C22C38/34;C22C38/44;C22F1/00;C22F1/10;C23F15/00;F01L3/00;F01L3/02;F01L3/22;F04B53/00;F16K1/12;F16K25/00 |
主分类号 |
C22C38/58 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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